Cover construction for loose-leaf binders



March 17, 1942. J. COOPER ETAL 2,276,536

COVER CONSTRUCTION FOR LOOSE LEAF BINDERS 1 Original Filed March 6, 1939HTTORNEYS.

Patented Mar. 17, 1942 COVER. CONSTRUCTION FOR LOOSE-LEAF BINDER JamesCooper, Solvay, and Gerhard H. J. Baule, Syracuse, N. Y., assignors toHall-McChcsney, Ine., Syracuse, N. Y., a corporation of New YorkOriginal application March 6, 1939, Serial No.

260,054. Divided and this application December 12, 1940, Serial No.369,854

3 Claims.

This invention relates to a cover construction for loose leaf binders ofthe type shown in our copending application, Sr. No. 260,054, filedMarch 6, 1939, of which this is a division, such binders being usedfor'the recording of documents such as deeds, mortgages, assignments,etc.

These binders are large heavy books handled daily by the public inexamining recordedinstruments and accordingly, the binders receive roughand severe usage. Up to the present time, it has been conventionalpractice to form the cover members of laminated cardboard which iscovered with suitable material, such as leather or buckram. The bindersare handled mainly by the cover members and accordinly covers of suchconstruction need frequent repairing.

This invention has as an object a cover construction formed of sheetmetal so fabricated as to be particularly rugged and durable in use andeconomical in manufacture, the cost of cover members embodying ourinvention being somewhat less than the cost of the conventionalcardboard cover. The cover is fabricated in such a manner as to presenta neat and attractive appearance to the binder and to closely resembleand match up with binders already in use which are provided with theconventional cardboard cover.

The invention consists in the novel features and in the combinations andconstructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanyingdrawing in which like characters designate corresponding parts in allthe views.

Figure 1 is a perspective view of a loose leaf binder provided with acover embodying our invention.

Figure 2 is a transverse sectional view of the binder.

Figure 3 is a perspective View of the inner side of one of the coverswith parts in section.

The covers may be attached to any suitable back structure and leafimpaling mechanism. As here ShOWIL'thB back structure consists of atrough-shaped member ID formed of sheet metal and provided with hingeeyes along each edge thereof, a flat inner back member ll extendingacross the member and being likewise provided along opposite edges withhinge eyes arranged in alinement with the hinge eyes of thetrough-shaped member ID.

The leaf impaling mechanism consists of a plate l2 secured to the innerback member ll and formed with hinge eyes i3 to which are pivotallymounted housings Hi to enclose and slidably receive a pintle bar [5 todetachably secure the ends of the posts It to the respective housmgs.

The covers consist of a shell formed of sheet metal consisting of a mainpanel 20 having a flange or tab 2| extending laterally from one sidethereof and being formed with spaced apart hinge eyes 22. The marginalportion about the main panel 20 is preferably formed on a slight angleto make an inclined marginal surface 23. The hinge eyes 22 are spacedapart and arranged to be positioned between the hinge eyes on the outerand inner back members I0, II, the covers being secured thereto by apintle rod 24.

The cover construction further includes a filler member 25 formed ofheavy cardboard, or like material, and which is arranged on the innerside of theshell and with the marginal portion thereof beveled orinclined complemental to the inclined surface 23 of the shell. Themarginal portion of the shell is bent inwardly to form an annular flange26 encircling the ends and the outer side of the filler member 25and'preferably the marginal surfaceof the cover is of sufficient extentto be bent inwardly to form inwardly extending flanges 27 overlappingthe marginal surface of the under side of the filler 25 and serve torigidly retain the filler member in proper position, and to make a neatand attractive inner cover surface. The filler member can not work ormove toward the back member of the binder because of the incline surface23 adjacent the flange 2|.

A liner 28, formed of sheet material of substantially the same thicknessas the metal from which the shell is formed, is arranged within theflanges 21 and is secured to the surface of the filler member 25 byadhesive or the like, and the cover is completed by a finishing layer 29overlying and secured to the liner 28 and slightly overlapping theflanges 21.

The exterior surface of the shell is provided with a baked coating ofresinous lacquer applied in such a manner as to closely simulate theappearance of a leather bound volume. The cover is not only moreserviceable in the handlingof the binder, but is a great deal moredurable in that it is not affected by excessive moisture. This is apractical advantage in that older record books are often dead filed orstored in the basement of buildings where they are subject to excessivedampness during the summer months. The conventional cover fabricatedfrom cardboard becomes badly warped under such conditions and oftendamaged beyond repair.

What we claim is: 1

1. A cover construction for loose leaf binders comprising a one-pieceintegral shell formed of sheet metal with spaced apart hinge eyes alongone side thereof, said shell consisting of a main panel forming theouter surface of the cover, a filler member arranged on the inner sideof said shell, said shell being formed with an annular flange encirclingthe end edges and the outer side edge of said filler member, and afinishing sheet overlying said filler member.

2. A cover construction for loose leaf binders comprising a one-pieceintegral shell formed of sheet metal with spaced apart hinge eyes alongone side thereof, said shell consisting of a main panel forming theouter surface of the cover, a filler member arranged on the inner sideof said shell, the marginal portion of said shell being bent inwardlyforming inwardly extending flanges overlapping the marginal portion ofsaid filler member and retaining the same within said shell.

3. A cover construction for loose leaf binders comprising a one-pieceintegral shell formed of sheet metal with spaced apart hinge eyes alongone side thereof, said shell consisting of a main panel forming theouter surface of the cover, the marginal portion of said panel beingbeveled and bent inwardly to form an inwardly extending flange arrangedin parallel spaced relation to said panel, a relatively thick fibrousfiller member arranged on the inner sideof the panel with its marginalportion arranged within said flange and being beveled complemental tothe bevel of the marginal portion of the panel, a liner formed of sheetmaterial of substantially the same thickness as the metal from whichsaid shell is formed adhesively secured to the inner side ofsaid fillermember and arranged within said flange, and a finishing sheet overlyingsaid liner sheet and being adhesively secured thereto.

JAMES COOPER. GERHARD H. J. BAULE.

